Refrigerating unit



June 5, 1928. x

J. R. REPLOGLE REFRIGERATING UNIT Filed ril 19, 1926 2 Shets-Sheet l [NI EN TOR. vamw ATTORNEY,

June 5, 1928. 1,672,825

" J. R. REPLOGLE REFRIGERATING UNIT Filed April 19, 1926 2 Shegts-Sheet 2 IAUQDVTOR.

y W W' A TTORNEY.

Patented June 5, 192 8 UNITED STATES P TENT OFFICE.

JOH R. REPLOGLE, or nnrno'rr, MICHIGAN, ASSIGNOR, BY MEsNE ASSIGNMENTS, r

ELECTRIC REFRIGERATION CGRIORATION, or person, MICHIGAN, A commas- TION OF MICHIGAN.

nnrBIGnRA'rINo UNIT.

Application filed April 19, 1926. Serial No. 102,928. 3

Thisinvention relates to refrigeratingunits, and more particularly to the. construction and mounting of water circulating tub ing in a condenser chamber, the present in-' 5 vention being" in the nature of an improvement in and relating to certain parts of a" refrigerating unit invented byine, and for which an application for LettersPatent .of

' the United States was filed on J.une'6,'1921, Serial No. 475,344. a

In refrigeration systems circulating piping is utilized for condensing refrigerant gas in a chamber of relatively small area having the compressor extending 1 into and forming the inner wall thereof, it

is necessary thatthe piping be coiled in close proximity to and around the 'compressorto p rovide' suflicient heat transferring surface. 'ibration of the coiled pipe against the walls of the chamber will cause noise, and

excessive vibration will tend to cause separation of the piping at its connection with the wall of the chamber which will permit 'leakage of the refrigerant from the system. The water piping is generally formed of a soft material to perrhi, eat being readily transferred therethrougl and vibration or displacementof the piping within the chamher will cause the piping to become cut or worn through due to contact with the compre'ssor which is formed of harder material and has sharp exterior edges.

An object of my invention is to provide a shield for the compressor which is mounted so that water circulating piping within a chamber of small area will not rub or be out against the compressor and thereby prevent water leakage in'the condensing chamber of a refrigeratin system.

A further objecto my invention'resides in the manner of forming and mounting a maximum length of water circulating pip- .ing in a condensing chamber of the character described to prevent niisplacement of the piping and also vibration thereof "against the walls of the chamber; when the comsuch variations and modifications'of the par- 'ticular embodiment thereof illustrated as come within the scopeof the concluding claims. W V

In the accompan ing drawings forming a partof this specification:

21. refrigerating unit, partially in section,

showing a compressor, condensing chamber and water coils within the condensing chamm which water ber; Figure is 'a plan View. of the compressor shield for the water coils; Figure 3 is a section of the shield taken on line 3-3 of Figure 2; and Figure 4 is an eleva- Figure 1 is" an elevation of a portion oftion of the water coil, as extended when removed from the condensing chamber.

Referring now to the drawings'in detail, 10 represents a crank case which terminates at its upper end in 'a wall '11. This wall extends interiorly and exteriorly of the side walls of the crank case and provides a sup-.

port for the dome. 12 and the compressor cylinder 13. A plurality of suitable resilient supports, vsuch as shown at 14 canbe provided beneath the crank case when desired.

The'dome 12, is preferably formed of copper sheeting which is provided at its base with-a flange 15, which rests u on and is supported by the upper .surface 0 the exterior portion of the wall 11. A ring 16 is placed over the flange 15 of the dome, and bolts 17 are extended through the ring, dome flange and crank case wall and are drawn'down in leak proof position by nuts 18.

The inner edge of the wall 11 provides an aperture 18 through which the compressor cylinder 13 projects,- and an annular flange 19 formed integral with the cylinder extends over the wall 11, and is secured therewith by bolts 20 which are drawn down by the nuts 21. The upper end of the cylinder is open and terminates in a. laterally extendrality of outlet ports 27 leading from the inlet port through the upper end thereof.

The body of the head is also provided with and support to limit the distance the valve can open, such stop member being threaded at its upper end through the support 29 so that its'position can be adjusted.

A piston34 is mounted within the compressor cylinder and is provided" with a valve in its head, not shown, through which refrigerant gas passes on the down stroke.

It will be understood that gas passes from an evaporator into the crank case, is compressed in the cylinder and discharged therefrom into the closed condenser chamber formed by the dome 12, the walls 11- of the crank case, the flange 19, and the exterior wall of the cylinder and cylinder head above the flange 19. The compressed gas is condensed by its conta i with the water circulating piping in the dome and collects in the lower ortion of the condenser chamber in liquid orm serving to cool the cylinder, and passing from the chamber through a suitable outlet to the evaporator. The piston 34 is reciprocated bythe rod 35 which is'driven in any conventional manner.

The system of refrigeration and the compressor mechanism described do not form the subject matter, of this invention except as they are associated with the condensing coils and their mounting, which I will now describe.

In orderto quickly and efiiciently condense the compressed refrigerant gases discharged by the compressor in a condensing chamber of small area, as illustrated, which is generall commercially desirable, it is necessary t at the water circulating pipe be jor portion in a plane between the outlet of the cylinder head and the top of the dome to obtain the greatest efficiency. In order to attain the highest efliciency of condensater tion-within a small condensing chamber,- I have formed the pipe in a plurality of nested helical coils which are spaced from each other and lie in their whole or major part substantially above the outlet parts of the cylinder head. The inlet end 40 of the pipe is coiled upwardly about the cylinder at 41 andis continued above the cylinder as the inner coil42 which is of an internal diameeater than the external diameter of the 5 next coiled downwardly forming the coil 43, then upwardly again forming the coil 44,

's are positioned withdy of the cylinder head. The pipe is' ter is circulated in the condenser chamber,

is preferably formed of cop r or a similar heat conducting material, w ich is helically wound in nested coils as above described.

The convolutions of each coil are spaced and are normally extended so that they can be compressed axially-under tension when assembled in the condenser compartment. I

The tubing is made of softer material than the cylinder head about-which it is assembled in close relation, and will be cut or worn through by contact with the head or its securing cap screws during handling or by vibration, unless protected. To protect the tubing from such conditions, and to pro vide a bearing, I provide a cap 50 for the compressor which encloses the head of the of the c linder head. The sleeve 51 extends axially eyond the upper end of the cylinder head and its end 52 is bent inwardly sufliciently to enclose the cap screws 30. The gas from the outlet ports 27 of the cylinder head will pass through the sleeve into the condenser chamber, and the sleeve is spaced from the'portion 25 of the cylinder head permittini'ready application or removal of the cap. e rim of the cap is bent to provide a curved upstanding head 53 which terminates in a downwardly bent edge portion 54 which rests upon and covers the peripheral edge of the cylinder head. The

rim, intermediate the head 53 and the sleeve 51, is curved and forms an annular depression 55. This depression is formed to act as a seat for the lower convolution of the coil 42'and to collect condensed gas, and

apertures, 56 are provided in the seat to' direct the condensation so collected against the upper face of the cylinder head therebeneath for cooling purposes.

The pipe coil in its extended form, as shown in Figure 4, is assembled in the dome with the inlet and outlet fittin 46 secured in leak proof relation with the ome wall, and

with the bosses 48 extending through suitable openings therein. The outer coil of the piping is of smaller diameter than .the dome 12 adjacent thereto, and the upper convolutions of the coils 42 and 43 hearing rtion 51, j

against the rim of the cap 50 and with the sleeve 51 extending interiorly of the coil 42,

whereupon the dome is pressed toward the wall 11 until it bears thereagainst. The bolts 18 are then drawn down to secure the dome in leak proof relation with the wall The relation of the cap with the coil 42 and with the lower convolutions of the coils 42 and 43 will preventlateral displacement of the piping at this point, and the convolut'ions of the coils 42 and 43 will be compressed and are under sufiicient tension be&

tween the cap 50 and the dome wall toprevent lateral displacement of the entire piping. In this manner the coils will be securely positioned in a definite relation-within the condensing chamber, and will still be sutficiently. resilient axially to absorb'the vibrations of the compressor and its driv ing mechanism without displacement or rattling'against the wall of the chamber. It

will also be seen that the coils will be protected from contacting with the compressor by the cap 50 so that they'will not rub or be cut thereby; r

What I claim is 1. In a, refrigerating system of the character described a closed condenser chamber having a refrigerant outlet, a compressor opening into said chamber and forming an interior wall thereof, and water circulating piping extending formed n a p urality of nested helically wound coils, said 'piping'being secured withf in said chamber by the tension of the inner coils against opposed walls of said chamber.

2. In a refrigeratingsystem of the character described, a closed condenser chamber having a refrigerant outlet, a cylinder extending within said chamber and having a head portion in communication with said chamber, said cylinder and head'forming a portion of the wall of said chamber, and

water circulating piping within said chamber formed in nested helical coils surrounding said cylinder and head, said coils intermediate said cylinder head and the opposite wall of said chamber being under tension.

therebetween to secure said piping in a stationary relation within said chamber.

3. In a refrigerating system of the character described, a closed condensing chamber having a refrigerant outlet, a compressor extending within and forming an interior wall of said chamber, said compressor having communication with said chamher, and water circulating piping wound in helical nested coils within said chamber, the interior coils of said piping being assembled in said chamber under tension to prevent displacementand hearing at one end against said cap at the other end against the wall of said chamber.

through said chamber and,

4. In arefrigerating system, a closed condenser chamber provided with a liquid refrigerant outlet, a compressor cylinder extendin into said chamber, a valved head a secure to the end of the cylinder within said chamber, an apertured cap member surrounding said cylinder head, and.a water circulating pipe. formed in helical resilient coils, within said chamber and extending through a wall thereof, some of sac-or pipe member and a. wall of said chamber, saidcap member-shielding said coils from contact with said cylinder head and providing a bearing therefor. l

5. In a refrigerating system, a closed c0n- I denser chamber PIOVidQdWitll aliquid re frigerant outlet, a "compressor projecti'n into said condenser chamber and arrange to discharge compressedvaporized refrigerant, a shield cap on the end of said compressor in said chamber, said'cap having an open upstanding sleeve portion and later'ally extending base, portion formed with an annular apertured gutter in which condensed vapor: is collected and directed against the head of said compressor, and

coiled water circulating pi ing under axial tension within said cham r and bearing chamber, 7

against said shieldicap and a wall of said 6, In a refrigerating system, a closed condenser chamber having a dome forming the upper portion thereof, a compressor extendin into said dome dischar ing com-' presse refrigerant vapor into sai chamber,

compressor, said cap being formed with an upstanding sleeve portion and a laterally extending flange depressed to provide an annular seat, and a water circulating pi e in said chamber extending through said ome,

'a sheet metal cap enclosing the head of said said pipe being formed in-a' plurality of cap enclosing, the end of said compressor, and'helically coiled water circulating pipe held under tension in a definite position within said chamber intermediate said cap and a wall of said chamber.

8. In a refrigerating system, a closed condenser chamber, a compressor extending into said chamber for dischargingcompressed refrigerant into said chamber, an apertured cap enclosing the end of said compressor, and a helically coiled water circulating pipe held under tension in a definite position within said chamber intermediate said cap 75 coils being compressed betweensaid cap" circulating piping engaging said cap under' and wall of said chamber, said cap being formed with a rounded exterior wall and spacing said coiled pipe from said compressor.

9. In a refrigerating system of the character described, a closed condensing cham ber having a refrigerant outlet, a compressor extending Within and forming an interior,

Wall of said chamber, water circulating coiled water piping, a. portion of said water tension.

10. In a refrigerating system of the ch ar acter described, a closed condensing chamher having a refrigerant outlet, a compressor forming an interior wall of said chamber. said compressor having a passagethe'rein through which compressedre frigcrant is directed into said chamber, water circulating piping coiled within said chamber, and a removable cap intermediate said compressor and said coiled Water piping, a portion of said coiled water piping engaging saidcap under tension.

' 11. In a refrigerating system of the character described, a closed condensing .cham'- her having a refrigerant outlet, a compressor forming an interior wall of said chamber, said compressor having a passage therein throu h which compressed refrigerant is di recte into saidachamber, Water circulating piping coiled Within, said chamber, and a shield element intermediate said compressip sor and said coiled water piping, a portion i '1 111g coiled within said chamber, an a cap intermediate said compressor and said of said'coiled water piping engaging said shield element under". tension. v

12. In a refrigerating system of the character described, a closed condensing chamber having; a refrigerant outlet, Water circulatpiping coiled within said chamber, a compressor forming an interior Wall of said chamber, said compressor-having a passage therein throu h which compressedrefrigerant is directed having an exterior wall devoid of angular projections intermediate said compressor and said coiled water piping' a' portion of said coiled water piping engaging said cap under tension. L

In testimony whereof, I hereunto afiix my signature.

J OHlfl R. REPLOGLE.

into said chamber, and a cap 

